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  • Testing the finite element of the mixed method for calculation flat rod systems taking into account physical nonlinearity. Part I: Statically definable systems

    The article presents the approbation of the previously proposed algorithm for calculating flat rod systems whose cross sections have one axis of symmetry and the material is physically nonlinear. The diagram of the relationship between stresses and strains corresponds to an ideal elastoplastic material or an elastoplastic material with hardening. The calculation algorithm is based on the developed finite element of the mixed method. Examples of calculating statically determinable rod systems are given.

    Keywords: finite element of the mixed method, elastoplastic material, physical nonlinearity

  • Modeling, with the introduction of an adaptive monitoring unit, a system for comprehensive protection of confidential information from cyber attacks

    The article provides an analysis of the proposed system for protecting confidential information of the organization. The rationale for the need for comprehensive protection is given, since the unidirectional system is not effective enough, leads to early failures and the loss of important confidential information, as well as an adaptive monitoring unit

    Keywords: confidential information protection system, protection subsystems, integrated confidential information protection system, probabilistic assessment, adaptive monitoring

  • Features of automation of systems of technological preparation of production of composite designs

    The work has formulated a justification for the necessity to perform works aimed at solving the tasks of providing technological preparation of composite structures production by means of automation based on the application of modern information and computing systems. The characteristics and key aspects that determine the efficiency of automation at the stage of technological preparation of production are highlighted. Justification of the relationship between the processes determining the process formation and its efficiency is given

    Keywords: automation, technological process, technological preparation of production, composite materials, composite designs, neural networks, modeling, process parameters

  • Carrying out complex cadastral works as a tool for filling the usrn with information in a 3-dimensional format

    This article discusses the issues of optimization of functioning of modern system of state cadastral registration of real estate objects and registration of rights of ownership on them with undertaking a comprehensive cadastral works and rendering of the received information with the help of 3D technology.

    Keywords: complex cadastral works, Unified State Register of real Estate (usrn), state cadastral registration, real estate objects, 3D cadastre, real estate objects, public cadastral chamber, real estate, land, systematized information

  • The symbolic model of language as a tool for studying language conflicts

    This article attempts to present the author’s symbolic model of the language, with an emphasis on the practical value of the model for resolving language conflicts. A weighty justification is given for the possibility of a symbolic interpretation of practically any phenomena and objects of reality, which can serve as a methodological key to decoding a single sociocultural code. Such an approach may indicate the discovery of a new vector in understanding the nature of language conflicts. In the model below, you can see many ideas that can provide a rich methodological arsenal of great heuristic power in the field of resolving various kinds of language conflicts

    Keywords: symbolic model of language, sociolect, sociocultural code, linguocultural community, language conflicts, language rights, multiculturalism, discrimination, language separatism, language policy

  • Mathematical representation of control of a PMSM for hardware implementation on FPGA

    In modern industry, more common motor choice is a permanent magnet synchronous motor (PMSM). This becomes an urgent issue for the implementation of control scheme for such engines: their mathematical description and the further hardware implementation of algorithms for field programmable gate array or for microcontroller. In this article a mathematical model of PMSM control was created, including a power unit with an inverter and an engine, a FPGA based control circuit with its internal interconnections of digital elements and a feedback sensor. In the future work, this model can be taken as the basis in the hardware implementation of the PMSM control system using CAD, for example, in such as Altera's Quartus II.

    Keywords: PMSM, mathematical description, PMSM control scheme, FPGA, Altera Quartus II

  • The method of quasi-optimal synthesis of multi-mode synchronization systems under conditions of regular disturbances based on the combined maximum principle

    A method for the quasi-optimal synthesis of a multi-mode synchronization system based on the maximum condition of the generalized power function has been developed. The effectiveness of its operation in capture mode is demonstrated on the basis of mathematical modeling. The results showed high resistance to disturbances and a decrease in the synchronization error of the multimode system in the steady state.

    Keywords: phase locked loop, combined maximum principle, multi-mode control

  • Investigation of the process of thermal conductivity in a plate with internal sources of heat of constant power

    Based on the use of additional boundary conditions (characteristics) and the integral method of heat balance, a numerical and analytical solution of the heat conduction problem for an infinitely extended plate is obtained under symmetric boundary conditions of the third kind with constant internal heat sources in time. Considering the heat flux on the plate surface as a new sought function, a simple analytical form of the specified problem is obtained. Using the proposed approach is possible for solving partial differential equations that do not allow separation of variables.

    Keywords: analytical solution, internal heat sources, non-stationary thermal conductivity, boundary value problem, boundary conditions of the third kind, additional function, integral of heat balance

  • Development of logistics and information technologies of cargo delivery planning in the port transport and technological system of the South of Russia

    The analysis of the existing system of export traffic management in the port transport and technological system of the region. The issues of violations of the terms of delivery of goods on the railway network and in the regional context are considered. The statistics of the trains left behind from the movement on the range of the railroads is studied. On the example of the North Caucasian railway (SKZHD) serving the ports of the Azov-black sea basin and consignees of the southern region, the issues of coordinated delivery of goods are considered. A systematic presentation of the issues of application and development of modern logistics and information technologies to solve the problems of management, planning and optimization of export traffic in rail and sea traffic is given. The analysis of the implementation of the main tasks solved with the help of Traffic information and logistic system (DILS) control unit Road logistics center (DLC) SKZHD.

    Keywords: Analysis, delivery time, reliability of delivery, railway transport, seaport, financial risk, transport services, competitiveness

  • Development and testing of a software package for multilayer barriers dynamic deformation calculating tasks on impact

    The functional-object visual programming environment “Algozit” is described. This environment includes a program for setting initial data on a model, a program for calculating strain and heat release, a program for displaying results. The possibility of using the "Algozit" environment in computational experiments is shown. The presentation of the algorithm for solving the problem of deforming layered samples upon impact in the form of a functional diagram is considered. The results of a physical experiment with an initial speed of a striking element of 300 m / s and 500 m / s are given. The nature of the temperature field distribution on the surface is described. The deformed forms of the woven sample are shown. Their comparison is shown.

    Keywords: visual programming, programming environment “Algozit”, multi-layered woven barrier, numerical scheme, algorithm, high-speed breaking through

  • Modernization of the Automated control system of the Local area network of the banking system

    The article deals with the modernization of the automated banking system management system. The scientific and technical fundamentals of designing and creating an integrated, multi-service, information and telecommunication system of a bank are described. The presented automated LAN management system of the banking system based on the active equipment of Cisco Systems provides the modular principle of building networks and their resistance to failures due to the fact that the performance of individual network components is independent of others.The solution allows to integrate devices into the system that provide the implementation of various technologies without changing the system architecture.The hierarchical and modular nature of this model allows to specialize individual LAN components independently of others.

    Keywords: bank control system, workstation, information security, virtual local area network, end node, terminal device, security system, network traffic, switch, distribution level

  • Spatial 3-tissue

    The proposed method of specifying the surface of a particular discrete frame with a flat 3-tissue. A one-parameter non-parametrized family of curves is given, i.e. a discrete frame of lines. There are two cases of specifying the lines of a discrete surface frame: point series or equations. In the article the questions of the task spatial 3-a fabric flat. In this case, the basic concepts of a proper tetrahedron and a complete quadrilateral are used. If the fabric M has two families of diagonal surfaces, then it also has a third similar family.

    Keywords: descriptive geometry, graphics, octahedral 3-tissue, spatial 3-tissue, full quadrilateral, topology, affine geometry, regular 3-tissue, projective geometry, involution

  • Mathematic modeling of the elasto-plastic state of a rotating disk

    Within approaching the plane-stress state the problem of a high-speed rotating disk being under side pressure is considered. Within the model of a perfect rigid-plastic body and the Mises yield criterion the values of external parameters for which the plastic zones appear have been defined. The stresses in plastic zones are obtained from the solution of the Cauchy problem, which includes two differential equations to define the stress tensor nonzero component. In order to estimate the stress state in the elastic zone the equivalent stress is introduced. The maximum allowable values of external parameters are obtained from the solution of the problem when the disk is in the limit state. The numerical results are represented as the stress vector hodograph.

    Keywords: the plane-stress state, Mises yield criterion, the equivalent stress, an elasto-plastic solid, a rotating disk, a stress vector hodograph

  • General diagram of the methodology for evaluating the acceptability of the communication node information collection, transmission and display system

    The article discusses the methodology and concept of situation rooms. The methodology and concept of situation rooms has a long history. As a first step, one can recall the methodology of a classic board in Cretaceous technology. Smart boards have now emerged, where hardware and software are present alongside the light pencil, to display various kinds of information. The second level in cognitive modeling systems is the collective panel display of various information products. Finally, the third level of situation rooms implies a significant development of the software and hardware of the decision-maker support complex. The high level of complexity of the third stage in the creation of the situation room is the creation of developed mathematical support in brainstorming tasks, as well as in the provision of analysis of weakly structured systems. However, while our work deals with the creation of a theoretical model of semantic identification of various scenes, situations of the person making the decision.

    Keywords: Information collection and display system, decision maker, electronic counteraction

  • Modeling of oscillations under the pulse effect of a multilayer structure in the Ansys complex

    The simulation of a multilayer structure in the finite element Ansys complex is considered. The design consists of 10 layers, each of which has certain specific properties. The model is an imitation of the soil base pavement. We consider the simulation in the form of a simplified, flat statement of the problem. The analysis of the oscillations under impact. The wave field of displacements at a given part of the structure is analyzed. Based on a numerical experiment, an approach to estimating the characteristics of a layer is constructed.

    Keywords: multi-layer construction, vibration diagnostics, simulation, FEM, Ansys, pulse action, dynamics, fluctuations

  • Thermal preparation of hydraulic drive of mobile machines using automatic control system

    In the territories of the Russian North in connection with the operation and development of oil and gas complex is operated by a large Park, the hydraulic mobile machines. Operation of such equipment is difficult in conditions of low negative ambient temperatures due to changes in the thermal state of units, elements of machine systems. The hydraulic system unlike other systems of machines is distributed throughout the machine, has a large length, many elements. The heating efficiency of which depends on the order, the simultaneity of inclusion, taking into account the duration and intensity of heating of each element. This problem is solved by automating the process of thermal preparation of hydraulic machines. For this purpose the scheme of automation of process of thermal preparation of elements of the hydraulic drive of the mobile car is developed. The algorithm of the program of the control unit of the process of thermal preparation is presented. For example, heating the working fluid exhaust gases of internal combustion engines developed functional scheme of automatic control system by the process of heating the working fluid in the hydraulic reservoir.

    Keywords: operation of machines in conditions of the North, hydraulic machines, thermal preparation of the hydraulic drive, hydraulic drive elements, automation of the thermal preparation of the hydraulic actuator, the control process of heat training, systems trai

  • Simulation model of the functioning of an autonomous energy supply system from an external combustion engine using wood fuel for a grinding and transportation machine producing of wood chips

    This article may be of interest to researchers who are designing new machine systems for felling-area works with autonomous energy supply. A methodology based on the decomposition method for creating an simulation functional model of a system consisting of a mobile wood chipper for felling-area works and a mobile energy module is proposed. The machine system of interest is an original technical solution. It consists of an autonomous energy supply module with powered by wood fuel external combustion engine and a logging machine for the production of wood chips. The functioning equipment units of the system is simulated using the MATLAB Simulink dynamic simulation environment. For the convenience of experiments, the use of LabVIEW virtual instruments is proposed for setting input and control parameters, as well as displaying output parameters. The input, control, disturbing and output parameters of each functional block of the system are described: gas generator, external combustion engine, electric generator, uninterruptible power supply, electric motor, propulsion device, wood chipper unit, hydraulic manipulator. It is supposed to use this simulation model to justify the main parameters of the autonomous system for the production of wood chips, as well as the further development of an automated control system.

    Keywords: fuel chips, wood fuel, unmerchantable tree, simulation model, LabVIEW, Simulink, mobile chipper, autonomous power supply, logging

  • Modeling of information security system based on analysis of system logs

    The article describes the method of identification of abnormal actions of users of corporate computer systems based on the analysis of log files. The proposed method is based on the clustering of system log events by The IPLoM algorithm and the construction of an event count matrix for its further analysis using machine learning methods.

    Keywords: machine learning, information security, data analysis, syslog monitoring, log file, IPLoM

  • Calculation of specific gains of losses in the optimization of reactive power in a complex power grid

    The article considers the methods of calculation of electric networks when choosing the locations of compensating devices of consumers. The basic network and calculation module of a complex network transformed into a full polygon is analyzed

    Keywords: reactive power compensation, optimization, power line, consumer compensating devices, analytical model, reactive load, power system

  • Model building for the numerical study of the stress-strain state of geomassive when moving a face

    For a numerical study of the stress-strain state of the edge sections of a coal vein under the influence of a mining zone, there is a mathematical model of the geomass deformation processes, which is reproduced in the form of boundary value problems of the theory of elasticity. The problem was solved by the finite element method in a variational formulation, in which the functional was minimized with full potential energy to determine displacements in narrow of elements. Computational experiments were carried out using the author's complex of programs. Based on the results of numerical modeling, recommendations for strengthening the coal target and definitely bearing capacity was developed. The use of the developed mathematical model and software package allows us to design documents at the development stage, to predict the stress-strain state of the geomass in the zone of influence of the underground mining system.

    Keywords: Mathematical model, numerical modeling, computational experiment, software package

  • Reference geoinformation system for managing the technical condition of commercial real estate in Rostov-on-Don

    The article provides information on the use of the geoinformation database of commercial real estate in the city of Rostov-on-Don. The database is designed to store information about commercial real estate with the aim of effectively managing the technical condition of the facilities. The prerequisites for creating a geographic information database was the need to manage the technical condition of commercial real estate of large companies on the basis of an outsourced agreement. The reference-geographic information system of commercial objects can be used for effective management, data processing and optimization of applications.

    Keywords: geographic information systems; commercial real estate; technical exploitation; energy efficiency

  • Technical science. Building and architecture

  • Technological aspect of rationalization of solutions of cable-stayed coatings of large-span sports objekts

    The work is a continuation of the study of cable-stayed roofs of large-span sports buildings, it focuses on the technological aspect of the construction of stadiums and sports palaces. Due to the introduced criterion of the location of the assembly of structures, the systematization of technologies for the construction of facilities currently commissioned has been carried out. The result of the work is a comparative table that allows to rationalize the choice of methods of pre-assembly and installation.

    Keywords: cable-stayed covering, large-span building, steel cable, cable, pylon, sports building, stadium, hanging roof, cable installation, pre-assembly, jack, disassembly of scaffolding

  • Analysis of the causes and consequences of potential inconsistencies in the construction industry

    Today, any production process is a means of making a profit for an organization. With this approach, products can be represented as the result of the conversion of input resources into output products. To obtain new information about the product, you can use the cybernetic approach, which allows you not to study the complex physico-chemical phenomena that occur during its production. The cybernetic approach helps to see many different factors that affect the quality of the product. All these factors are important to consider when developing the documentation of the quality management system (QMS). The main task of the QMS is to prevent the influence of negative factors on the quality of the goods. This problem can be solved with a tool called “Failure Type and Effects Analysis (FMEA)”. In the article, with the aim of introducing in the production of building products and structures, the cybernetic model "black box" was considered. Also presented is an analysis of the types and consequences of nonconformities (FMEA analysis), which allows you to see the most significant causes of nonconformities and develop corrective measures for them. The article was published as part of the implementation of the program of the International Forum "The Poor May 1945"

    Keywords: quality, cybernetics, defect, analysis, QMS, metal, fencing, construction, products, FMEA.

  • Electrical conductivity and piezoresistive properties of cement paste with addition of carbon nanotubes

    Paper presents a review of scientific works investigating of effect of carbon nanotubes (CNT) concentration on electrical conductivity and pizeresistive properties of concrete. Different values of the percolation threshold for nanomodified concrete obtained by different authors are given. Recommendations for specifying the favorable concentration of nanotubes in composites are considered. As a result of review a need for additional dedicated research for the assessment of relation between favorable CNT concentration and their characteristics, method for the producing of composite and conditions of its application is stated.

    Keywords: concrete, sensor, carbon nanotubes, percolation threshold, electrical conductivity, monitoring of stress-strain state